Alphawolf3709
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The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods. What is this an example of? directional selection disruptive selection ecosystem selection stabilizing selection

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alyannaolivas

Answer: directional

Explanation:

Because only one trait was favored. When bears are cold, being bigger helps them better adapt to the coldness. Adjusting to the weather is one trait.

The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods

is an example of Directional selection.

What is a directional selection?

It occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other.

What does directional selection do?

It is compelling in nature that causes a population to evolve towards one end of a trait spectrum.

Learn more about Directional Selection here

https://brainly.com/question/1075333

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